Concrete-insert.



H. DIPPEL CONCRETE INSERT.

APPLICATION HLED FEB. 9. I916.

1,218,378. Patented Mar. 6, 191 7.

HARRY DIrrEL, or PHILADELPHiA', -E'aaersvaa a;

ooivcnnrn-msnn'r.

Specification of Letters Patent.

Application fil ed Febriiary e, 1916; Serial No. 77,118."

To all whom it may] concern Be it known that I, I L RRY DIIPEL, acitizen of the United States, and resident of Philadelphia, county 'ofPhiladelphia, and

State of Pennsylvania, have invented an' Improvement inConcrete-Inserts, of which the following is a specification. 7

My invention has for its object theprovision of a suitable constructionof metal insert for concrete ceilings which shall embody certainimprovements over devices of a similar nature heretofore in use, in thatit more snugly fits to the moldiform or boards and hence, during theforming of the concrete ceiling, prevents the concrete'working under thesame; and in the finished ceiling, has its lower surface in smoothalinement with the concrete surface.

With the above and other objects in View, the nature of which will bemore fully understood from the description hereinafter, the inventionconsists in the novel construction of concrete insert as hereinaftermore fully described and defined in the claim.

In the drawings :-Figure 1 is a side elevation of one of my improvedinserts before use; Fig. 2 is a plan view of the same; Fig. 3 is'asectional elevation showing the insert attached to the mold form orboard; and Fig. 4 is a sectional elevation of a modification of myinvention.

' 2 is a vertical body having a screw-threaded hole 3 open at thebottom. The body is preferably of considerable height compared with itsdiameter and has its upper end formed integral at 5 with .a plurality ofarms 4 having feet 6 at their lower ends. As shown, the arms are ribbedand hence rigid, while their connections with the body are by theductile portions 5 of relatively thin metal and hence yielding. 7 Thesearms extend radially outward and downward and terminate in a plane whichis not coincident with the plane of the bottom of the body 2,

as will be seen by reference toIF'ig. 1; and this is an importantfeature ofmy invention. The insert as a whole is made of cast iron andthen malleableized so that the parts 5 are ductile and flexible so' thatthe arms 4". may be bent relatively to the body, for reasons to be laterdescribed. This ductile condition of the insert may be confined to theconnecting portions 5 if so desired, as these are the only parts to besubjected to bending; and the malleability or ductility of these partswhereby they may beifiexible without danger of breaking is anotherimportant feature of my invention.

In employing my invention in practice, the body 2 has its flat endresting upon the mold form or board 7 and with the feet 6 of the arms 4normally hanging down with a' space as between them and said board;thefeet are then nailed down tightly with nails 9 in so securing themthearms 4 are bent downwardly about the ductile. portions 5 until the tea 6restupon the form 7. In so securing the .insert in, position upon theform, the end of the body 2 is pressed or drawn down upon the woodensurface with considerable .force so as to practically indent the woodensurface toinake a tight joint. The arms 4 insure the body being heldvertically upward upon the mold or form, as shown. 4

When the concrete is now thrown into th mold, it surrounds the insertand causes it to beembedded with the exception of the feet and body end;and when the concrete has set, the insert will be strongly held in placeand all hidden from view except the portion or portions which hadtightly pressed upon the form or mold board. It will be understood thatin springing down the anns' 4 their feet 6 need not be made to touch theboard or form, as the bending at 5 under this condition will besuflicient to insure the tight fit of the body 2 to the form surfacedesired, In this case the finished ceiling will not expose the feet atall, but only the lower surface of the body, to which the fixture is tobe attached. I have shown at 10 a reinforce steel rod which may beembedded in the concrete and pass between the arm 4 and body 2 and henceact as an additional metal support for the insert, should the concretecrack or crumble under heat or other cause.

In the modification shown in Fig. 4, I have all of the insert formed ofductile metal, the bodv 2 being composed of a piece of gas pipinginternally threaded at 3, and,

having a reduced neck 12 at the top and fitted with a stamped sheetmetal spider pro viding the arms 4' corresponding to the arms 4 of theother figures. These arms 4 Patented Mar. 6,1917.

are bent at their top portions 5 adjacent the o ring center part, sothat they may bend when applying the insert to the form. I This spiderportion, providing the arms 4*, is riveted in place by beating down theflanged.

portion 13. In this way the entire insert may be made of ductile metaland thereby overcome the necessity of employing malleable metal. Thesame general construction and mode of use are carried out in themodification of Fig. 4: as in the structure of the other figures.

It will now be apparent that Ihave devised a novel and usefulconstruction which embodies the features of advantage enumerated asdesirable, and while I have in the present instance shown and describedthe preferred embodiment thereof which has been found in practice togive satisfactory and reliable results, it is to be understood that I donot restrict myself to the details, as the same are susceptible ofmodification in various particulars Without departing from the spirit orscope of the invention.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is

'As an article of manufacture, an insert for concrete ceilings, etc,which consists of a central elongated body provided with three or moreradiating arms extending from one end of said body and projectingobliquely outward away from the body and having their ends normallyterminating in a plane slightly back of the plane of the other end ofthe body, said arms each terminating in a foot and said feet widelyseparated and arranged at a considerable distance'from the body andmovable relatively thereto, and in which further the union of the armswith the body is formed by flexible portions capable of bending withoutbreaking, whereby the feet may be independently adjusted and sprung downwhen applying the insert to the false work and cause the body to presstightly upon such false work.

- In testimony of which invention 1 hereunto set my hand.

RUTH M. FnANon, Geo. YV. A. KAPPEL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G. r

